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## |
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## Mailbox locations and namespaces |
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## |
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# Location for users' mailboxes. The default is empty, which means that Dovecot |
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# tries to find the mailboxes automatically. This won't work if the user |
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# doesn't yet have any mail, so you should explicitly tell Dovecot the full |
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# location. |
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# |
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# If you're using mbox, giving a path to the INBOX file (eg. /var/mail/%u) |
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# isn't enough. You'll also need to tell Dovecot where the other mailboxes are |
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# kept. This is called the "root mail directory", and it must be the first |
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# path given in the mail_location setting. |
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# |
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# There are a few special variables you can use, eg.: |
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# |
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# %{user} - username |
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# %{user|username} - user part in user@domain, same as %u if there's no domain |
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# %{user|domain} - domain part in user@domain, empty if there's no domain |
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# %{home} - home directory |
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# |
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# See https://doc.dovecot.org/latest/core/settings/variables.html for full list |
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# of variables. |
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# |
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# Example: |
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# mail_driver = maildir |
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# mail_path = ~/Maildir |
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# mail_inbox_path = ~/Maildir/.INBOX |
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# |
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# Debian defaults |
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# Note that upstream considers mbox deprecated and strongly recommends |
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# against its use in production environments. See further information |
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# at |
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# https://doc.dovecot.org/2.4.1/core/config/mailbox/formats/mbox.html |
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mail_driver = maildir |
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mail_home = /srv/vmail/%{user} |
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mail_path = %{home}/Maildir |
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#mail_inbox_path = /var/mail/%{user} |
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# If you need to set multiple mailbox locations or want to change default |
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# namespace settings, you can do it by defining namespace sections. |
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# |
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# You can have private, shared and public namespaces. Private namespaces |
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# are for user's personal mails. Shared namespaces are for accessing other |
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# users' mailboxes that have been shared. Public namespaces are for shared |
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# mailboxes that are managed by sysadmin. If you create any shared or public |
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# namespaces you'll typically want to enable ACL plugin also, otherwise all |
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# users can access all the shared mailboxes, assuming they have permissions |
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# on filesystem level to do so. |
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namespace inbox { |
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# Namespace type: private, shared or public |
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#type = private |
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# Hierarchy separator to use. You should use the same separator for all |
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# namespaces or some clients get confused. '/' is usually a good one. |
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# The default however depends on the underlying mail storage format. |
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#separator = |
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# Prefix required to access this namespace. This needs to be different for |
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# all namespaces. For example "Public/". |
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#prefix = |
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# Physical location of the mailbox. This is in same format as |
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# mail location, which is also the default for it. |
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# mail_driver = |
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# mail_path = |
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# |
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# There can be only one INBOX, and this setting defines which namespace |
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# has it. |
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inbox = yes |
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# If namespace is hidden, it's not advertised to clients via NAMESPACE |
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# extension. You'll most likely also want to set list=no. This is mostly |
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# useful when converting from another server with different namespaces which |
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# you want to deprecate but still keep working. For example you can create |
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# hidden namespaces with prefixes "~/mail/", "~%u/mail/" and "mail/". |
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#hidden = no |
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# Show the mailboxes under this namespace with LIST command. This makes the |
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# namespace visible for clients that don't support NAMESPACE extension. |
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# "children" value lists child mailboxes, but hides the namespace prefix. |
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#list = yes |
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# Namespace handles its own subscriptions. If set to "no", the parent |
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# namespace handles them (empty prefix should always have this as "yes") |
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#subscriptions = yes |
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# See 15-mailboxes.conf for definitions of special mailboxes. |
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} |
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# Example shared namespace configuration |
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#namespace shared { |
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#type = shared |
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#separator = / |
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# Mailboxes are visible under "shared/user@domain/" |
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# $user, $domain and $username are expanded to the destination user. |
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#prefix = shared/$user/ |
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# Mail location for other users' mailboxes. Note that %{variables} and ~/ |
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# expands to the logged in user's data. %{owner_user} and %{owner_home} |
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# destination user's data. |
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#mail_driver = maildir |
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#mail_path = %{owner_home}/Maildir |
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#mail_index_path = ~/Maildir/shared/%{owner_user} |
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# Use the default namespace for saving subscriptions. |
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#subscriptions = no |
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# List the shared/ namespace only if there are visible shared mailboxes. |
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#list = children |
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#} |
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# Should shared INBOX be visible as "shared/user" or "shared/user/INBOX"? |
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#mail_shared_explicit_inbox = no |
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# System user and group used to access mails. If you use multiple, userdb |
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# can override these by returning uid or gid fields. You can use either numbers |
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# or names. <https://doc.dovecot.org/latest/core/config/system_users.html#uids> |
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mail_uid = vmail |
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mail_gid = vmail |
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# Group to enable temporarily for privileged operations. Currently this is |
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# used only with INBOX when either its initial creation or dotlocking fails. |
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# Typically this is set to "mail" to give access to /var/mail. |
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#mail_privileged_group = mail |
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# Grant access to these supplementary groups for mail processes. Typically |
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# these are used to set up access to shared mailboxes. Note that it may be |
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# dangerous to set these if users can create symlinks (e.g. if "mail" group is |
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# set here, ln -s /var/mail ~/mail/var could allow a user to delete others' |
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# mailboxes, or ln -s /secret/shared/box ~/mail/mybox would allow reading it). |
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#mail_access_groups = |
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# Allow full filesystem access to clients. There's no access checks other than |
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# what the operating system does for the active UID/GID. It works with both |
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# maildir and mboxes, allowing you to prefix mailboxes names with eg. /path/ |
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# or ~user/. |
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#mail_full_filesystem_access = no |
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# Dictionary for key=value mailbox attributes. This is used for example by |
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# URLAUTH and METADATA extensions. |
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#mail_attribute { |
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# dict file { |
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# path = %{home}/Maildir/dovecot-attributes |
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# } |
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#} |
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# A comment or note that is associated with the server. This value is |
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# accessible for authenticated users through the IMAP METADATA server |
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# entry "/shared/comment". |
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#mail_server_comment = "" |
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# Indicates a method for contacting the server administrator. According to |
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# RFC 5464, this value MUST be a URI (e.g., a mailto: or tel: URL), but that |
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# is currently not enforced. Use for example mailto:admin@example.com. This |
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# value is accessible for authenticated users through the IMAP METADATA server |
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# entry "/shared/admin". |
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#mail_server_admin = |
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## |
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## Mail processes |
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## |
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# Don't use mmap() at all. This is required if you store indexes to shared |
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# filesystems (NFS or clustered filesystem). |
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#mmap_disable = no |
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# Rely on O_EXCL to work when creating dotlock files. NFS supports O_EXCL |
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# since version 3, so this should be safe to use nowadays by default. |
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#dotlock_use_excl = yes |
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# When to use fsync() or fdatasync() calls: |
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# optimized (default): Whenever necessary to avoid losing important data |
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# always: Useful with e.g. NFS when write()s are delayed |
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# never: Never use it (best performance, but crashes can lose data) |
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#mail_fsync = optimized |
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# Locking method for index files. Alternatives are fcntl, flock and dotlock. |
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# Dotlocking uses some tricks which may create more disk I/O than other locking |
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# methods. NFS users: flock doesn't work, remember to change mmap_disable. |
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#lock_method = fcntl |
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# Directory where mails can be temporarily stored. Usually it's used only for |
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# mails larger than >= 128 kB. It's used by various parts of Dovecot, for |
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# example LDA/LMTP while delivering large mails or zlib plugin for keeping |
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# uncompressed mails. |
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#mail_temp_dir = /tmp |
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# Valid UID range for users, defaults to 500 and above. This is mostly |
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# to make sure that users can't log in as daemons or other system users. |
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# Note that denying root logins is hardcoded to dovecot binary and can't |
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# be done even if first_valid_uid is set to 0. |
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#first_valid_uid = 500 |
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#last_valid_uid = 0 |
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# Valid GID range for users, defaults to non-root/wheel. Users having |
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# non-valid GID as primary group ID aren't allowed to log in. If user |
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# belongs to supplementary groups with non-valid GIDs, those groups are |
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# not set. |
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#first_valid_gid = 1 |
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#last_valid_gid = 0 |
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# Maximum allowed length for mail keyword name. It's only forced when trying |
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# to create new keywords. |
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#mail_max_keyword_length = 50 |
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# ':' separated list of directories under which chrooting is allowed for mail |
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# processes (ie. /var/mail will allow chrooting to /var/mail/foo/bar too). |
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# This setting doesn't affect login_chroot, mail_chroot or auth chroot |
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# settings. If this setting is empty, "/./" in home dirs are ignored. |
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# WARNING: Never add directories here which local users can modify, that |
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# may lead to root exploit. Usually this should be done only if you don't |
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# allow shell access for users. <https://doc.dovecot.org/latest/core/config/chrooting.html> |
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#valid_chroot_dirs = |
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# Default chroot directory for mail processes. This can be overridden for |
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# specific users in user database by giving /./ in user's home directory |
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# (eg. /home/./user chroots into /home). Note that usually there is no real |
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# need to do chrooting, Dovecot doesn't allow users to access files outside |
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# their mail directory anyway. If your home directories are prefixed with |
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# the chroot directory, append "/." to mail_chroot. <doc/wiki/Chrooting.txt> |
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#mail_chroot = |
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# UNIX socket path to master authentication server to find users. |
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# This is used by imap (for shared users) and lda. |
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#auth_socket_path = /var/run/dovecot/auth-userdb |
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# Directory where to look up mail plugins. |
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#mail_plugin_dir = /usr/lib/dovecot |
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# Space separated list of plugins to load for all services. Plugins specific to |
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# IMAP, LDA, etc. are added to this list in their own .conf files. |
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#mail_plugins = |
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# |
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# To add plugins, use |
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#mail_plugins { |
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# plugin = yes |
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#} |
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## |
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## Mailbox handling optimizations |
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## |
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# Mailbox list indexes can be used to optimize IMAP STATUS commands. They are |
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# also required for IMAP NOTIFY extension to be enabled. |
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#mailbox_list_index = yes |
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# Trust mailbox list index to be up-to-date. This reduces disk I/O at the cost |
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# of potentially returning out-of-date results after e.g. server crashes. |
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# The results will be automatically fixed once the folders are opened. |
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#mailbox_list_index_very_dirty_syncs = yes |
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# Should INBOX be kept up-to-date in the mailbox list index? By default it's |
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# not, because most of the mailbox accesses will open INBOX anyway. |
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#mailbox_list_index_include_inbox = no |
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# The minimum number of mails in a mailbox before updates are done to cache |
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# file. This allows optimizing Dovecot's behavior to do less disk writes at |
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# the cost of more disk reads. |
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#mail_cache_min_mail_count = 0 |
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# When IDLE command is running, mailbox is checked once in a while to see if |
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# there are any new mails or other changes. This setting defines the minimum |
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# time to wait between those checks. Dovecot can also use inotify and |
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# kqueue to find out immediately when changes occur. |
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#mailbox_idle_check_interval = 30 secs |
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# Save mails with CR+LF instead of plain LF. This makes sending those mails |
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# take less CPU, especially with sendfile() syscall with Linux and FreeBSD. |
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# But it also creates a bit more disk I/O which may just make it slower. |
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# Also note that if other software reads the mboxes/maildirs, they may handle |
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# the extra CRs wrong and cause problems. |
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#mail_save_crlf = no |
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# Max number of mails to keep open and prefetch to memory. This only works with |
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# some mailbox formats and/or operating systems. |
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#mail_prefetch_count = 0 |
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# How often to scan for stale temporary files and delete them (0 = never). |
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# These should exist only after Dovecot dies in the middle of saving mails. |
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#mail_temp_scan_interval = 1w |
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# How many slow mail accesses sorting can perform before it returns failure. |
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# With IMAP the reply is: NO [LIMIT] Requested sort would have taken too long. |
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# The untagged SORT reply is still returned, but it's likely not correct. |
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#mail_sort_max_read_count = 0 |
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protocol !indexer-worker { |
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# If folder vsize calculation requires opening more than this many mails from |
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# disk (i.e. mail sizes aren't in cache already), return failure and finish |
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# the calculation via indexer process. Disabled by default. This setting must |
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# be 0 for indexer-worker processes. |
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#mail_vsize_bg_after_count = 0 |
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} |
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## |
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## Maildir-specific settings |
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## |
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# By default LIST command returns all entries in maildir beginning with a dot. |
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# Enabling this option makes Dovecot return only entries which are directories. |
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# This is done by stat()ing each entry, so it causes more disk I/O. |
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# (For systems setting struct dirent->d_type, this check is free and it's |
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# done always regardless of this setting) |
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#maildir_stat_dirs = no |
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# When copying a message, do it with hard links whenever possible. This makes |
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# the performance much better, and it's unlikely to have any side effects. |
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#maildir_copy_with_hardlinks = yes |
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# Assume Dovecot is the only MUA accessing Maildir: Scan cur/ directory only |
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# when its mtime changes unexpectedly or when we can't find the mail otherwise. |
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#maildir_very_dirty_syncs = no |
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# If enabled, Dovecot doesn't use the S=<size> in the Maildir filenames for |
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# getting the mail's physical size, except when recalculating Maildir++ quota. |
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# This can be useful in systems where a lot of the Maildir filenames have a |
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# broken size. The performance hit for enabling this is very small. |
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#maildir_broken_filename_sizes = no |
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# Always move mails from new/ directory to cur/, even when the \Recent flags |
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# aren't being reset. |
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#maildir_empty_new = no |
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## |
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## mbox-specific settings |
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## |
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# Which locking methods to use for locking mbox. There are four available: |
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# dotlock: Create <mailbox>.lock file. This is the oldest and most NFS-safe |
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# solution. If you want to use /var/mail/ like directory, the users |
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# will need write access to that directory. |
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# dotlock_try: Same as dotlock, but if it fails because of permissions or |
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# because there isn't enough disk space, just skip it. |
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# fcntl : Use this if possible. Works with NFS too if lockd is used. |
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# flock : May not exist in all systems. Doesn't work with NFS. |
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# lockf : May not exist in all systems. Doesn't work with NFS. |
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# |
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# You can use multiple locking methods; if you do the order they're declared |
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# in is important to avoid deadlocks if other MTAs/MUAs are using multiple |
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# locking methods as well. Some operating systems don't allow using some of |
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# them simultaneously. |
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#mbox_read_locks = fcntl |
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#mbox_write_locks = dotlock fcntl |
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# Maximum time to wait for lock (all of them) before aborting. |
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#mbox_lock_timeout = 5 mins |
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# If dotlock exists but the mailbox isn't modified in any way, override the |
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# lock file after this much time. |
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#mbox_dotlock_change_timeout = 2 mins |
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# When mbox changes unexpectedly we have to fully read it to find out what |
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# changed. If the mbox is large this can take a long time. Since the change |
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# is usually just a newly appended mail, it'd be faster to simply read the |
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# new mails. If this setting is enabled, Dovecot does this but still safely |
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# fallbacks to re-reading the whole mbox file whenever something in mbox isn't |
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# how it's expected to be. The only real downside to this setting is that if |
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# some other MUA changes message flags, Dovecot doesn't notice it immediately. |
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# Note that a full sync is done with SELECT, EXAMINE, EXPUNGE and CHECK |
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# commands. |
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#mbox_dirty_syncs = yes |
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# Like mbox_dirty_syncs, but don't do full syncs even with SELECT, EXAMINE, |
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# EXPUNGE or CHECK commands. If this is set, mbox_dirty_syncs is ignored. |
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#mbox_very_dirty_syncs = no |
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# Delay writing mbox headers until doing a full write sync (EXPUNGE and CHECK |
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# commands and when closing the mailbox). This is especially useful for POP3 |
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# where clients often delete all mails. The downside is that our changes |
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# aren't immediately visible to other MUAs. |
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#mbox_lazy_writes = yes |
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# If mbox size is smaller than this (e.g. 100k), don't write index files. |
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# If an index file already exists it's still read, just not updated. |
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#mbox_min_index_size = 0 |
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# Mail header selection algorithm to use for MD5 POP3 UIDLs when |
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# pop3_uidl_format=%m. For backwards compatibility we use apop3d inspired |
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# algorithm, but it fails if the first Received: header isn't unique in all |
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# mails. An alternative algorithm is "all" that selects all headers. |
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#mbox_md5 = apop3d |
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## |
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## mdbox-specific settings |
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## |
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# Maximum dbox file size until it's rotated. |
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#mdbox_rotate_size = 10M |
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# Maximum dbox file age until it's rotated. Typically in days. Day begins |
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# from midnight, so 1d = today, 2d = yesterday, etc. 0 = check disabled. |
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#mdbox_rotate_interval = 0 |
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# When creating new mdbox files, immediately preallocate their size to |
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# mdbox_rotate_size. This setting currently works only in Linux with some |
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# filesystems (ext4, xfs). |
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#mdbox_preallocate_space = no |
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# Settings to control adding $HasAttachment or $HasNoAttachment keywords. |
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# By default, all MIME parts with Content-Disposition=attachment, or inlines |
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# with filename parameter are consired attachments. |
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# add-flags - Add the keywords when saving new mails or when fetching can |
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# do it efficiently. |
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# content-type=type or !type - Include/exclude content type. Excluding will |
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# never consider the matched MIME part as attachment. Including will only |
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# negate an exclusion (e.g. content-type=!foo/* content-type=foo/bar). |
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# exclude-inlined - Exclude any Content-Disposition=inline MIME part. |
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#mail_attachment_detection_options = |
